I think foolproof tactic is:
- dive to periscope dephth regularily and don't trust your sonarman. Listen always itself.
- don't trust your watch crew in fog and/or heavy storm. Be on bridge!
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Heil Lothar-Günther Buchheim!
Heil Otto Dix! Heil Ernst-Ludwig Kirchner! Heil Karl Schmidt-Rotluff! Heil Oskar Kokoschka! Heil Käthe Kollwitz! Heil Max Beckmann! Heil Emil Nolde! Heil Walter Gropius! Heil Ernst Barlach!
Last but not least...salute all german expressionists!
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